National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Tracking Major Hurricane Erin; Hot in the Mid-Mississippi Valley

Major Hurricane Erin is tracking just north of the lower Bahamas today. Dangerous surf and rip current threats increase this week for most of the Atlantic coastline. Erin's outerbands may impact the Outer Banks later this week. Hot to extremely hot temperatures are forecast today and Tuesday from a part of the southern Plains into the central to lower Mississippi River Valley. Read More >

Hazardous Weather Conditions

Current conditions at

Granby-Grand County Airport (KGNB)

Lat: 40.09°NLon: 105.92°WElev: 8207ft.

Fair

82°F

28°C

Humidity 14%
Wind Speed W 7 G 21 mph
Barometer 30.44 in
Dewpoint 29°F (-2°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 18 Aug 1:35 pm MDT
Extended Forecast for

4 Miles WNW Granby CO

  • This Afternoon

    This Afternoon: Sunny, with a high near 80. West southwest wind around 7 mph.

    High: 80 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 43. North wind 5 to 7 mph becoming light and variable after midnight.

    Low: 43 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 83. Calm wind becoming east 5 to 9 mph in the afternoon. Winds could gust as high as 20 mph.

    High: 83 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 43. East southeast wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 43 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 85. Calm wind becoming northeast 5 to 8 mph in the afternoon. Winds could gust as high as 18 mph.

    High: 85 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 44.

    Low: 44 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 86.

    High: 86 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 45.

    Low: 45 °F

    Partly Cloudy

  • Friday

    Friday: Showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 81.

    High: 81 °F

    Mostly Sunny
    then Showers
    Likely

Detailed Forecast

This Afternoon
Sunny, with a high near 80. West southwest wind around 7 mph.
Tonight
Mostly clear, with a low around 43. North wind 5 to 7 mph becoming light and variable after midnight.
Tuesday
Sunny, with a high near 83. Calm wind becoming east 5 to 9 mph in the afternoon. Winds could gust as high as 20 mph.
Tuesday Night
Mostly clear, with a low around 43. East southeast wind 5 to 10 mph, with gusts as high as 20 mph.
Wednesday
Sunny, with a high near 85. Calm wind becoming northeast 5 to 8 mph in the afternoon. Winds could gust as high as 18 mph.
Wednesday Night
Mostly clear, with a low around 44.
Thursday
Sunny, with a high near 86.
Thursday Night
Partly cloudy, with a low around 45.
Friday
Showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 81.
Friday Night
A chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 42.
Saturday
A chance of showers and thunderstorms. Partly sunny, with a high near 78.
Saturday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 42.
Sunday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 75.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles WNW Granby CO
 40.11°N 106.01°W (Elev. 8035 ft)
Last Update:
4:00 am MDT Aug 18, 2025
Forecast Valid:
1pm MDT Aug 18, 2025-6pm MDT Aug 24, 2025
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation